How to improve Google's EAT score?

E-A-T is a part of Google’s Quality Rater Guidelines (QRG), which are used to evaluate the quality of search results for specified queries. In theory, the higher the quality rating, the better your content will rank. To improve EAT score you must have to take care  of few things. These points are mentioned below.

1. Every page must have a purpose, and that purpose must be accomplished to benefit the user. Specifically, the page should fulfill its intended purpose, but that purpose also should be user-centered.
2. easily visible About Us & Contact Us pages, these page should include third-party reviews, testimonials & ratings, in-depth company history and certifications from industry organizations.
3. Content must be written by experts, and expertise should be clearly communicated/visible through author bio & credentials.
4. Company Wikipedia page should be optimized, thorough, and feature an ‘Awards & Recognition’ section: To get a high E-A-T rating, your business must have a “positive reputation as a trustworthy source” – and Google’s guidelines explicitly state that raters should look to Wikipedia for relevant awards & recognition when conducting “reputation research” to corroborate claims made on-site.